Touch up run_simple doc, #446.

docs/patterns/appdispatch.rst

@@ -30,9 +30,9 @@ at :func:`werkzeug.serving.run_simple`::
 Note that :func:`run_simple <werkzeug.serving.run_simple>` is not intended for
 use in production.  Use a :ref:`full-blown WSGI server <deployment>`.
 
-In order to use the interactive debuggger, debugging must be enables both on 
-the application and the simple server, here is the "hello world" example with debugging and 
-:func:`run_simple <werkzeug.serving.run_simple>` :
+In order to use the interactive debuggger, debugging must be enabled both on
+the application and the simple server, here is the "hello world" example with
+debugging and :func:`run_simple <werkzeug.serving.run_simple>`::
 
     from flask import Flask
     from werkzeug.serving import run_simple
@@ -45,7 +45,8 @@ the application and the simple server, here is the "hello world" example with de
         return 'Hello World!'
 
     if __name__ == '__main__':
-        run_simple('localhost', 5000, app, use_reloader=True, use_debugger=True, use_evalex=True)
+        run_simple('localhost', 5000, app,
+                   use_reloader=True, use_debugger=True, use_evalex=True)
 
 
 Combining Applications